DP and I are hoping to have a week in the summer holidays with her DD and our 11yo DGS. Boy would love other children to play with, and some outdoor activities - he has a lot of indoor and screen time so one aim is to encourage him to enjoy the natural world! I've looked at various holiday parks, but ideally we'd like something a bit wilder, and not absolutely cheek-by-jowl with hundreds more people. But DGS loves swimming so a pool would be good . . . Caravan, lodge, cottage all fine, within 200 miles of London preferably. Any suggestions gratefully received.